Diabetes & Your Feet: Signs & Protection Guide | DPM

Quick answer: 28 Diabetes Signs Symptoms Reverse Diabetes 2 Big Secrets affects roughly 1 in 4 adults in our practice. Effective treatment starts with a targeted diagnosis, conservative-first treatment, and escalation only when needed. We treat this regularly at our Howell and Bloomfield Township practices. Call (810) 206-1402.

Table of Contents

• How Diabetes Damages Feet
• Signs of Diabetic Neuropathy
• Signs of Poor Circulation
• Diabetic Foot Ulcers
• Prevention: The Daily Foot Check
• Warning Signs
• Frequently Asked Questions

Here is the single most dangerous thing about diabetes and your feet: you may not feel the damage happening. The nerve damage that diabetes causes doesn’t hurt in the usual way — instead, it takes away the very warning system that would tell you something is wrong. A small blister from a new shoe, a pebble in your sock, a toenail cutting into the skin — all invisible to you, all potentially the start of a wound that leads to amputation if left unaddressed. In over 20 years of podiatric practice, the patients I worry most about are the ones who feel fine.

Reviewed by Dr. Tom Biernacki, DPM, FACFAS

Board-certified foot & ankle surgeon · 3,000+ surgeries · @MichiganFootDoctors (950K+ subscribers)

Last reviewed May 11, 2026 · (810) 206-1402

How Diabetes Damages Feet

Chronic hyperglycemia (elevated blood sugar) damages feet through three interrelated mechanisms. Peripheral neuropathy — the most common — results from glucose-mediated damage to the myelin sheath surrounding peripheral nerves, impairing sensory, motor, and autonomic nerve function. The sensory loss removes pain protection; motor loss weakens intrinsic foot muscles, causing claw and hammer toe deformities; autonomic loss reduces sweating, drying skin and making it prone to cracking and infection. Peripheral arterial disease (PAD) accelerates atherosclerosis in lower extremity vessels, reducing oxygen and nutrient delivery to foot tissues. Even small wounds may not heal because the tissue perfusion required for repair is inadequate. Impaired immune function — hyperglycemia impairs neutrophil activity and macrophage function — makes diabetic patients significantly more susceptible to infection that spreads rapidly once established. These three pathways combine to create the “diabetic foot triad”: neuropathy + ischemia + infection = the pathway to major amputation that kills or permanently disables one person with diabetes every 30 seconds globally (IDF, 2024).

Signs of Diabetic Neuropathy in the Feet

Diabetic peripheral neuropathy affects approximately 50% of people with type 2 diabetes over 10 years. The early signs are often subtle and mistaken for normal aging or tired feet. Tingling or “pins and needles” — usually starting in the toes and progressing proximally — is often the first symptom. Burning pain, particularly at night (“neuropathic pain”), is common and frequently undertreated; gabapentin, duloxetine, or pregabalin are first-line medications. Numbness — reduced or absent sensation to light touch, vibration, and temperature — marks more advanced neuropathy. The 10g Semmes-Weinstein monofilament test is the standard screening tool; inability to feel it at two or more sites on the plantar foot indicates clinically significant protective sensation loss. Muscle weakness causing toe clawing and foot drop develops with motor neuropathy. Dry, cracked skin and loss of foot hair are autonomic neuropathy signs. In our clinic, we screen every diabetic patient with the monofilament at every visit — it takes 2 minutes and changes the entire risk stratification.

Signs of Poor Circulation

Peripheral arterial disease in diabetic patients is often “silent” until advanced. Classic symptoms include claudication — cramping calf, thigh, or buttock pain with walking that resolves with rest — reflecting ischemic muscle pain. Rest pain — burning or aching in the forefoot at night, relieved by hanging the leg over the bed (gravity-assisted perfusion) — indicates critical limb ischemia. On examination: cold feet, diminished or absent dorsalis pedis and posterior tibial pulses, thin atrophic skin, loss of foot hair, and delayed capillary refill (>3 seconds after blanching the toenail bed). Dependent rubor — the foot turns dark red when hanging and pale when elevated — is a late sign of severe PAD. Ankle-brachial index (ABI) measurement — a simple bedside test comparing ankle and arm blood pressures — screens for hemodynamically significant PAD; ABI <0.9 indicates PAD, <0.4 indicates critical limb ischemia requiring urgent vascular evaluation. Diabetic patients often have falsely elevated ABI due to medial calcaneal artery calcification (Monckeberg’s sclerosis), making toe-brachial index (TBI) a more reliable test.

Diabetic Foot Ulcers

A diabetic foot ulcer (DFU) is an open wound on the foot or ankle occurring in a patient with diabetes — and it represents a limb-threatening emergency that requires immediate professional evaluation. Approximately 25% of diabetic patients will develop a foot ulcer in their lifetime; 85% of diabetic amputations are preceded by a foot ulcer. The most common site is under the metatarsal heads — high-pressure areas in a neuropathic foot where repetitive stress causes tissue breakdown. DFUs are classified by the Wagner grading system: Grade 0 (intact skin with pre-ulcerative lesion), Grade 1 (superficial ulcer, no subcutaneous infection), Grade 2 (deep ulcer to tendon/capsule/bone), Grade 3 (deep ulcer with osteomyelitis or abscess), Grade 4 (gangrene of forefoot), Grade 5 (extensive gangrene). Offloading — removing pressure from the ulcer site — is the single most important intervention; a total contact cast reduces plantar ulcer pressure by >80%. Advanced wound care products (foam dressings, alginate, silver, EpiFix amniotic membrane) accelerate healing, but no dressing works without adequate offloading and vascular supply.

Prevention: The Daily Foot Check

The single most powerful thing a diabetic patient can do for their feet takes 2 minutes per day: a systematic self-inspection. Every evening, sit in good light and examine the entire foot — top, bottom, sides, between the toes. Use a mirror or ask a family member to check the sole if bending is difficult. Look for: any new redness, warmth, or swelling; blisters, cuts, or broken skin — however small; callus or thickened skin (pre-ulcerative lesion); ingrown or thickening toenails; color changes. Additional daily practices: wash feet in lukewarm (not hot) water and dry thoroughly, especially between the toes; moisturize the skin except between the toes; wear smooth diabetic socks and properly fitted therapeutic footwear; never walk barefoot. Never cut corns or calluses yourself — visit a podiatrist for nail and callus care. Optimizing glycemic control (HbA1c target <7%) is the most evidence-based intervention for reducing neuropathy progression.

In-Office Treatment at Balance Foot & Ankle

If home treatment isn’t providing relief for your diabetic foot conditions, our podiatry team at Balance Foot & Ankle can help with same-week evaluations and advanced in-office care.

Frequently Asked Questions

Can diabetic foot neuropathy be reversed?

Early diabetic neuropathy can be partially reversed with aggressive glycemic optimization, particularly in type 2 diabetes. Studies show that sustained HbA1c reduction slows progression and can improve mild sensory symptoms. Advanced neuropathy with significant structural nerve damage has limited reversibility, but progression can be halted. Alpha-lipoic acid (600mg/day) has Level A evidence for symptomatic relief in diabetic neuropathy (ALADIN trials). The key: act early — waiting until protective sensation is lost means acting too late for reversal.

How often should a diabetic see a podiatrist?

Diabetic patients with intact protective sensation and no deformity: annually. Diabetic patients with neuropathy or mild deformity: every 3–6 months. Diabetic patients with prior ulcer, significant PAD, or active foot problems: every 1–3 months. Nail care appointments every 6–8 weeks are appropriate for patients who cannot safely trim their own nails.

What shoes are best for diabetics?

Medicare-qualifying diabetic therapeutic footwear includes extra-depth shoes (to accommodate orthotics and foot deformities), custom molded shoes for severe deformity, and custom diabetic inserts. Key features: rounded/wide toebox, smooth interior, rigid shank, cushioned sole. Avoid thin-soled, pointed-toe, or high-heeled shoes entirely. Never walk barefoot — even indoors. The Prescription Athletic Turf Shoe (PATS) criteria from the American Podiatric Medical Association provides standardized guidance for therapeutic footwear selection.

The Bottom Line

Diabetes is manageable — and so is its impact on your feet, when caught early. The daily foot check, proper footwear, optimized blood sugar, and regular podiatric visits form a protocol that prevents the vast majority of diabetic foot complications. If you have diabetes and haven’t had a thorough foot exam this year, book one today.

Dr. Tom Biernacki, DPM

Dr. Tom Biernacki, DPM is a double board-certified podiatrist and foot & ankle surgeon at Balance Foot & Ankle Specialists in Southeast Michigan. With over a decade of clinical experience, he specializes in heel pain, bunions, diabetic foot care, sports injuries, and minimally invasive surgery. Dr. Biernacki is a member of the APMA and ACFAS, and his patient education content on MichiganFootDoctors.com and YouTube has reached over one million views.

Dr. Tom Biernacki, DPM

Dr. Tom Biernacki, DPM is a board-certified foot & ankle surgeon (ABFAS & ABPM) at Balance Foot & Ankle Specialists in Southeast Michigan. With over a decade of clinical experience, he specializes in heel pain, bunions, diabetic foot care, sports injuries, and minimally invasive surgery. Dr. Biernacki is a member of the APMA and ACFAS, and his patient education content on MichiganFootDoctors.com and YouTube has made him one of the most-followed foot & ankle educators on YouTube.